加速计

//过期的加速计类UIAccelerometer是不需要引入系统框架的,

//CoreMotionManager 需要引入CoreMotion框架

#import "ViewController.h"

#import <CoreMotion/CoreMotion.h>

#import "UIView+Extension.h"

#import "AudioTool.h"

@interface ViewController ()<UIAccelerometerDelegate>

@property (weak, nonatomic) IBOutlet UIImageView *ball;

//过期的加速计对象

@property(nonatomic,strong)UIAccelerometer*accelerometer;

@property(nonatomic,strong)CMMotionManager *manager;

//记录当前的速度 x轴 Y轴 的速度

@property(nonatomic,assign)CGPoint speed;

//保存上一次的坐标

@property(nonatomic,assign)CGPoint prePoint;

@end

@implementation ViewController

//懒加载创建运动管理器

-(CMMotionManager*)manager

{

if (!_manager) {

_manager=[[CMMotionManager alloc]init];

//设置加速计更新间隔

_manager.accelerometerUpdateInterval=1/30.0;

}

return _manager;

}

- (void)viewDidLoad {

[super viewDidLoad];

//motionManager有两种更新方式,一种是主动获取,需要时更新

//另一种是一直更新

//1.一直更新

[self.manager startAccelerometerUpdatesToQueue:[NSOperationQueue mainQueue] withHandler:^(CMAccelerometerData *accelerometerData, NSError *error) {

//获取加速度的结构体

CMAcceleration acceleration=accelerometerData.acceleration;

//acceleration.x,X轴上的加速度,acceleration.y,Y轴上的加速度

_speed.x+=acceleration.x;

_speed.y-=acceleration.y;

//移动小球

self.ball.x+=_speed.x;

self.ball.y=_speed.y;

//碰撞检测,是否触碰到了边界

if(self.ball.x<0)

{

self.ball.x=0;

_speed.x*=-0.8;

}

if (self.ball.x>self.view.width-self.ball.width) {

self.ball.x=self.view.width-self.ball.width;

_speed.x=-0.8;

}

if (self.ball.y < 0) {

self.ball.y = 0;

_speed.y *= -0.8;

}

if (self.ball.y > self.view.height - self.ball.height) {

self.ball.y = self.view.height - self.ball.height;

_speed.y *= -0.8;

}

if (self.ball.x != _prePoint.x && self.ball.y != _prePoint.y ) {

if (self.ball.x == 0 || self.ball.x == self.view.width - self.ball.width || self.ball.y == 0 || self.ball.y == self.view.height - self.ball.height) {

//播放音效

[AudioTool playWithFileName:@"1.aif"];

}

}

_prePoint.x = self.ball.x;

_prePoint.y = self.ball.y;

}];

}

//2.主动获取

-(void)test

{

//需要值的时候自己去拿

[self.manager startAccelerometerUpdates];

}

//点击屏幕获取

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event

{

//获取加速计的结构体

CMAcceleration acceleration=self.manager.accelerometerData.acceleration;

NSLog(@"x=%lf,y=%lf,z=%lf",acceleration.x,acceleration.y,acceleration.z);

}

//3 过期的加速计

-(void)testaddAccelerometer

{

//1.创建 加速计对象 UIAccelerometer 是一个系统自带单例

UIAccelerometer *accelero=[[UIAccelerometer alloc]init];

self.accelerometer=accelero;

//设置更新间隔

accelero.updateInterval=1/30;

accelero.delegate=self;

}

-(void)accelerometer:(UIAccelerometer *)accelerometer didAccelerate:(UIAcceleration *)acceleration

{

NSLog(@"x=%lf,y=%lf,z=%lf",acceleration.x,acceleration.y,acceleration.z);

}

- (void)didReceiveMemoryWarning {

[super didReceiveMemoryWarning];

// Dispose of any resources that can be recreated.

}

@end